How to inseminate sows and how to inseminate sows

First of all, the spongy head of the vas deferens is lubricated with semen or lubricating glue, then the labia of the sow is separated by hand, and the vas deferens is slowly inserted into the vagina along a slightly oblique upper angle, when the vas deferens is inserted at about 25-30cm, the top of the vas deferens has reached the cervical orifice, then it is inserted into the vas deferens, the top of the semen bottle cap is cut off with scissors, and then inserted into the tail of the vas deferens.

First, how to inseminate sows

1, when deferencing, first of all, the sponge head of the vas deferens is lubricated with semen, or lubricated glue, which is conducive to the insertion of the vas deferens, while the test boar is placed outside the pen of the sow, which is conducive to stimulating the libido of the sow and promoting the absorption of semen, then separate the labia of the sow by hand, and slowly insert the vas deferens into the vagina at a slightly oblique upper angle. When inserting 25-30cm or so, there will be some resistance.

2. At this time, the top of the vas deferens has reached the cervix cervix, and then rotate the vas deferens left and right by hand, with a little effort, the top enters the 2-3 wrinkles of the cervix cervix. Generally, pigs with good estrus will lock the vas deferens and feel some resistance when pulling back. You can confirm that the vas deferens has entered the cervix, and you can carry out insemination.

3. Generally, when you use a vas deferens bottle to inseminate, after inserting the vas deferens, you can cut off the top of the semen bottle cap with scissors, and then insert it into the tail of the vas deferens. When you use a semen bag to inseminate, you only need to insert the tail of the vas deferens into the entrance of the semen bag. In order to facilitate the absorption of semen, you can make an opening at the bottom of the vas deferens bottle and use air pressure to promote absorption.

4. During insemination, the insemination personnel should massage the vulva or the inner thigh of the sow, which is beneficial to increase the libido of the sow. The insemination personnel ride upside down on the back of the sow, and then massage, and the effect is also more remarkable. The normal insemination time needs to be the same as natural mating, usually 3-10 minutes.

5. In order to avoid semen reflux, after insemination, you can not rush to pull out the vas deferens, you can take off the semen bottle or bag, discount the tail of the vas deferens, and insert it into the uncapped semen bottle or bag hole, which can not only avoid the entry of air, but also prevent semen reflux.

Matters needing attention in feeding sows

1. Generally, to meet the supply of nutrients is to ensure the normal growth and development of sows and fetuses. The nutrients obtained by sows from diets first meet the needs of fetal growth and development, and then supply the sows themselves. At the same time, prepare nutrients for lactation, in addition to providing sufficient energy and protein feed for sows, they also need to meet the needs of minerals and vitamins.

2. Generally, the diets fed to pregnant sows should pay attention to hygiene and ensure quality, and should not be fed with mildew, freezing, poisonous and strongly irritating feed, otherwise it is easy to cause abortion, and attention should be paid not to change feed varieties and formulations casually. Feed green roughage needs to be fed less frequently, so that sows can drink clean water at any time.